Iranian Threat Group Updates Tactics, Techniques and Procedures in Spear Phishing Campaign
From January 2018 to March 2018, through FireEye’s Dynamic Threat Intelligence, we observed attackers leveraging the latest code execution and persistence techniques to distribute malicious macro-based documents to individuals in Asia and the Middle East. We attribute this activity to TEMP.Zagros, an Iran-nexus actor that has been active since at least May 2017. This actor has engaged in prolific spear phishing of government and defense entities in Central and Southwest Asia. The spear phishing emails and attached malicious macro documents typically have geopolitical themes. When successfully executed, the malicious documents install a backdoor we track as POWERSTATS. One of the more interesting observations during the analysis of these files was the re-use of the latest AppLocker bypass, and lateral movement techniques for the purpose of indirect code execution. The IP address in the lateral movement techniques was substituted with the local machine IP address to achieve code execution on the system.